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|Noun||1.||Nyctaginia - a caryophyllaceous genus of the family Nyctaginaceae having only one species|
caryophylloid dicot genus - genus of relatively early dicotyledonous plants including mostly flowers
Allioniaceae, family Allioniaceae, family Nyctaginaceae, four-o'clock family, Nyctaginaceae - a family of flowering plants of the order Caryophyllales